Home / 2,678.21-4,015.15-1,119.41

Finding the Fourth Proportional to 2,678.21, 4,015.15 and 1,119.41

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Solution

The fourth proportional to 2,678.21, 4,015.15 and 1,119.41 is: 1,678.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.21 : 4,015.15 = 1,119.41 : x
  2. Step 2: Convert to fraction form
    2,678.21/4,015.15 = 1,119.41/x
  3. Step 3: Cross multiply
    2,678.21x = 4,015.15 × 1,119.41
  4. Step 4: Simplify right side
    2,678.21x = 4,494,599.06
  5. Step 5: Solve for x
    x = 4,494,599.06/2,678.21
  6. Step 6: Final answer
    x = 1,678.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.